47-11-01 NAVION: (Was Mandatory Note 1 of AD-782-3.) Applies Only to Serial Numbers NAV-4-2 to NAV-4-550, Inclusive.
To be accomplished immediately.
Remove present rudder-nose gear steering bellcrank, P/N 145-34175 and replace with new part of the same number furnished by North American. The replacement part is to be identified by a yellow dot and the stamp (SPL).
(North American Service Bulletin No. 21, dated January 23, 1947, covers this same subject.)